Ok, now I have the full understanding of the affected components: gnome-sound-properties was set to AlsaMixer as default mixer device (Intel 82801DB-ICH4) and ALL mixer tracks were selected. The track "IEC958 Playback AC97-SPSA" allows only this 4 levels of control - so the mixer hotkeys (controlled by gnome-settings-daemon) just used the common determinator und could not use the more granular setting in /apps/gnome_settings_daemon/volume_step. All other tracks can be controlled in steps of 6%. Disabling the IEC958 track or changing to the pulseaudio mixer solved the problem as expected.
But there is still the regression: why did the behaviour change between Hardy and Intrepid? BTW: the design is unintuitive - why is the volume_step not merged into /apps/gnome-volume-control and not exposed in the GUI? ... I will file a bug against gnome. -- [Intrepid] regression: only 4 volume levels with hotkeys https://bugs.launchpad.net/bugs/301982 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs